IC engine ignition angle adaption method for matching variable compression ratio e.g. for automobile engine, with transition ignition angle used during compression ratio variation phase

摘要

The adaption method has the ignition angle for the IC engine obtained from a characteristic field corrected via a given correction function, for matching the actual compression ratio, in stationary operating phases having a constant compression ratio, with a transition ignition angle used for preventing engine knock via an ignition angle reserve, in instationary operating phases with a varying compression ratio.